3-46 2007 Buell P3: Engine
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NOTE
The same piston may be used if cylinder bore was not
changed, unless it is scuffed or grooved. If re-using piston,
replace piston rings and hone the cylinder walls with a No.
240 grit flexible hone to facilitate ring seating.
2. See Figure 3-77. Apply engine oil to piston grooves. Use
TRANSMISSION SHAFT RETAINING RING PLIERS
(Part No. J-5586) to slip compression rings over piston
into their respective grooves. Be extremely careful not to
over expand, twist rings or damage piston surface when
installing rings.
NOTE
Install second compression ring with dot towards top.
3. See Figure 3-78. Install rings so end gaps of adjacent
rings are a minimum of 90° apart. Ring gaps are not to
be within 10° of the thrust face centerline.
4. See Figure 3-79. Check for proper side clearance with
thickness gauge, as shown. See 3.1 SPECIFICATIONS.
NOTE
If the ring grooves are clean and the side play is still not cor-
rect, replace the rings, the piston or both.
Figure 3-77. Installing Piston Rings using Transmission
Shaft Retaining Ring Pliers (Part No. J-5586)
Figure 3-78. Ring End Gap Position
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x0486x3x
Piston
Pin
Position ring end gaps at arrows
Front
Rear
Figure 3-79. Measuring Ring Clearance in Groove
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